Note 13 - Segment Information (Details) - Total Assets by Segment (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Jun. 30, 2013
Cash and marketable securities:
Cash and cash equivalents	$ 6,266	$ 5,462	$ 1,645	$ 1,966
Marketable securities	450	1,763
Total cash and marketable securities	6,716	7,225
Other assets:
Total other assets	5,967	5,560
Total assets	12,683	12,785
Power Supplies [Member]
Other assets:
Power Supplies and Tape Libraries	2,168	2,329
Tape Libraries [Member]
Other assets:
Power Supplies and Tape Libraries	$ 3,799	$ 3,231